High Quality DOSS Waterproof Wireless Bluetooth SpeakerFeatures: 1)Special Doss voice prompt, calling answer.2)Pneumatic pressure cone technology,neodymium iron boron speaker, perfect quality sound.3)Military technology plastic shell and silicone. Antiwear, Waterproof, Shockproof, Dustproof.4)Double metal fine mesh, prevent dust intrusion,..